package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.websocket.SessionException;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

//         1、将页面的密码password进行md5加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

//         2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

//         3、如果没有查到则返回登陆失败
        if(emp == null){
            return R.error("登陆失败");
        }

//         4、密码比对，如果不对则返回登录失败
        if(!emp.getPassword().equals(password)){
             return R.error("登陆失败");
        }

//         5、查看员工状态，如果已为禁用，则返回员工已禁用
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

//         6、登陆成功，将员工id存入session并返回登陆成功
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);

    }
    @PostMapping("/logout")
    public R<String> login(HttpServletRequest request){
        //清理session中保存的员工id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功！");
    }

    @PostMapping
    @Transactional
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee){
    log.info("新增员工信息：{}", employee.toString());
    //设置初始密码123，需要进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123".getBytes()));
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //获得当前登录用户id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee) ;
        return R. success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        log.info("page = {}, pageSize = {}, name = {}", page,pageSize,name);

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //执行查询\
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }

    @PutMapping
//    @Transactional
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee){
        log.info(employee.toString());

        long id = Thread.currentThread().getId();
        log.info("线程id为:{}" ,id);
//        Long empId = (Long)request.getSession().getAttribute( "employee");
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId) ;
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");

    }


    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息");

        Employee employee = employeeService.getById(id);
        if(employee != null) {
             return R.success(employee);
         }
        return R.error("没有查询到员工信息");
    }
}
